Joe Biden is on course to suffer the most catastrophic loss by a Democrat in the state of Iowa in 100 years, a devastating new poll reveals.

Former President Donald Trump holds a 50 to 32 percent lead over Biden in the state, according to an authoritative new survey by the Des Moines Register/Mediacom.

If Biden receives the same meager 32 percent of the vote in the November election, it would be the worst Democratic showing in Iowa since the 1924 general election – exactly one century ago.

Trump’s landslide lead in the state comes after a Manhattan jury found him guilty of falsifying business records in the Stormy Daniels case.

His conviction has not scared off potential voters and may actually help him, the poll showed.

One Iowa voter, Donald Share, 63, told the Des Moines Register that he is solidly voting for Trump because of his criminal conviction.

‘His convictions on these charges are part of the reason my mind is made up,’ said Share.

‘The more they try to get him out of the picture, the stronger they make him. I, for one, believe that the charges are bogus.’

Trump’s lead was 48-33 in February, indicating the president’s support in Iowa ticked up since he was found guilty on 34 counts weeks ago.

Trump won the state 53-45 back in 2020, and his campaign is confident it will dominate again in a few months.

The result comes on a day Biden got a boost in a separate Marist/PBS/NPR poll coming days before he is set to debate Trump in Atlanta. The national poll had the two candidates tied at 49 percent.

This election cycle is already featuring data that shows Trump reversing historical trends and nabbing record support among black voters.

Biden is also struggling with young voters and Hispanic voters who were a key part of his coalition, even as he takes new executive actions to wipe away student loan debt and provide new paths to citizenship to people who came here illegally.

Of Biden’s supporters, 81 percent in Iowa say their minds are made up, indicating he is at least locking down many of his supporters.

His approval rating in Iowa is just 28 percent, with 67 percent disapproval.

Pollster Ann Selzer noted that the numbers were going in a direction that ‘is consistently downward’ for Biden.

The most recent time a Democrat won Iowa in November was 2012, when Biden was on the ticket with President Barack Obama. They also won it in 2008.

Trump won an outright majority there both times he was on the ballot.